USB2504A-JT Ver la hoja de datos (PDF) - SMSC -> Microchip

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USB2504A-JT

Integrated USB 2.0 Compatible 4-Port Hub

SMSC -> Microchip 

Integrated USB 2.0 Compatible 4-Port Hub

Datasheet

5.2.3.1

EEPROM Offset 1:0(h) - Vendor ID

BIT

NUMBER

15:8

7:0

BIT NAME

VID_MSB

VID_LSB

DESCRIPTION

Most Significant Byte of the Vendor ID.

Least Significant Byte of the Vendor ID.

5.2.3.2 EEPROM Offset 3:2(h) - Product ID

BIT

NUMBER

15:8

7:0

BIT NAME

PID_MSB

PID_LSB

DESCRIPTION

Most Significant Byte of the Product ID.

Least Significant Byte of the Product ID.

5.2.3.3 EEPROM Offset 5:4(h) - Device ID

BIT

NUMBER

15:8

7:0

BIT NAME

DID_MSB

DID_LSB

DESCRIPTION

Most Significant Byte of the Device ID.

Least Significant Byte of the Device ID.

5.2.3.4 EEPROM Offset 6(h) - CONFIG_BYTE_1

BIT

NUMBER

7

6

5

4

BIT NAME

SELF_BUS_PWR

PORT_IND

HS_DISABLE

MTT_ENABLE

DESCRIPTION

Self or Bus Power: Selects between Self- and Bus-Powered operation.

0 = Bus-Powered operation. (BUS Default)

1 = Self-Powered operation. (SELF Default)

Note: If Dynamic Power Switching is enabled, this bit is ignored and the

SELF_PWR pin is used to determine if the hub is operating from self or bus

power.

Port Indicator Support: Indicates implementation of LED indicators

0 = No LED indicators.

1 = LED indicators.

High Speed Disable: Disables the capability to attach as either a High/Full-

speed device, and forces attachment as Full-speed only i.e. (no High-Speed

support).

0 = High-/Full-Speed. (Default)

1 = Full-Speed-Only (High-Speed disabled!)

Multi-TT enable: Enables one transaction translator per port operation.

0 = single TT for all ports.

1 = one TT per port (multiple TT’s supported)

SMSC USB2504/USB2504A

21

DATASHEET

Revision 2.3 (08-27-07)

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